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Steve Spencer
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Re: FM Review: Voigtlander 50mm f/2 APO-Lanthar


AndereObjektiv wrote:






With the X-T3 at 10.06, the EOS M6 mk2 at 10.08 stops and the R5 at 10.86; just 0.80 stops separates these eight quite modern sensors at apples to apples ISO 100 at APS-C. With a full frame M10-R thrown in to boot at 10.71 stops.




You do realize that the Canon R5 and R6 and the Sony A7r IV and A7s III all do over a stop better than all of the APS-C camera at every ISO and about a stop and a half better at base ISO when shot in FF mode. They of course perform similarly when shot in crop mode (i.e., APS-C) as you see in the chart. The M10-R does better than all the APS-C camera by about a stop except at base ISO. The Leica sensor is not quite as good as the Sony sensors at base ISO and the Canon sensors build in noise reduction which helps their performance at base ISO by about a half to two thirds of a stop.

Contrary to what you suggest, the chart you link actually demonstrates pretty conclusively that the FF sensors are a stop or a little more better than the APS-C sensors. You could have seen that easily if you would have included the lines for the FF performance of the sensor and not just the crop mode performance.

You don't buy a FF camera to shoot it exclusively in crop mode. If you did that, then of course it would make sense to buy an APS-C camera. The appropriate comparison is coming the cameras using the whole sensor of each camera.



Dec 25, 2021 at 12:07 AM





  Previous versions of Steve Spencer's message #15807598 « Voigtlander 50mm f/2 APO-Lanthar Review »